How to clear QGridLayout?

Question

Qt

it is necessary to clear the GridLayout from widgets, not to remove the widgets themselves from memory, just so that they are not displayed. This is done in order to redraw these widgets (perhaps in order to delete only one widget, and redraw the rest). But my widgets remain on the Layout but do not react. I use and experiment with the following piece of code

QList<QmyWdiget*> opened_chat;
...
QLayoutItem *poLI;
QWidget *poW;
while((poLI=opened_chat_layout->takeAt(0))!=0){
poW=poLI->widget();
opened_chat_layout->removeWidget(poW);
opened_chat_layout->removeItem(poLI);
//poW->deleteLater();
// delete poW;
// delete poLI;
}
...
opened_chat.removeAt(index);
...
//дальше перестройка виджетов на Layout

Answer 1

I used to do it like this:

pCheckBox = (QCheckBox*)gridLayout->itemAtPosition(k, 0)->widget();
gridLayout->removeWidget((QCheckBox*)gridLayout->itemAtPosition(k, 0)->widget());
pCheckBox->hide();